The dollar firmed for a second straight session on Friday after three days of losses, bolstered by worries about the health of the global economy.
Asia stocks joined Wall Street's selloff on Friday, led by declines in the energy sector, as investors fretted over slowing European growth.
Stocks dropped Thursday as investors considered corporate earnings and a decline in weekly jobless claims.
U.S. stock futures pared steep earlier losses on Friday, as European and Asian stocks continued this week's global rout.
Treasury fell on Thursday morning after wholesale trade data topped forecast and monthly jobless claims hit an eight-year low.
European shares closed down on Thursday, after trading in and out of positive territory throughout the afternoon.
The dollar tumbled to a three-week low against the yen on Thursday as investors continued to pare back bullish bets on the greenback.
Crude oil settled below $86 a barrel for the first time since December 2012.
Gold settled near a two-week high as expectations of an early hike in US interest rates eased and the dollar lost traction.
Asian equities were mostly higher on Thursday following reassurance that the U.S. Federal Reserve would not raise interest rates anytime soon.
Wall Street pulled back to trade mostly lower on Thursday, following a global rally after the release of the Federal Reserve's dovish minutes.
U.S. stocks ended about 2 percent higher on Wednesday as markets extended gains on the FOMC minutes and recovered from Tuesday's selloff.
Bonds rose after minutes from the Fed's September policy meeting showed members debated about forward guidance on the timing of rate hikes.
European shares closed mostly lower on Wednesday, as fears over global growth and the Ebola virus spooked investors.
Brent crude futures fell as lower economic growth forecasts raised concerns about global oil demand amid rising U.S. inventory levels.
Gold extended gains as growing concerns over the global economy prompted safe-haven bids, while the return of China also lifted prices.
The dollar fell to a two-week low against the euro on Wednesday after the minutes of the latest Fed meeting focused on risks to the U.S. economy.
Asian shares were mostly lower on Wednesday following a global rout but Shanghai bucked the trend after a week-long holiday.
Stocks fell Tuesday, extending losses into a second day, amid increased signs of slowing growth in Europe and ahead of earnings.
European shares closed lower on Tuesday, with sentiment curbed by weak economic data from Germany and a downturn on Wall Street.
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Euro zone annual inflation held steady at 0.2 percent in July, far below the European Central Bank's target.
A U.K. withdrawal from the EU could trigger another Scottish independence referendum, said Nicola Sturgeon, the First Minister of Scotland.
Japan's inflation target remains out of reach, with June core CPI for June barely budging and as households unexpectedly stopped spending.